公开(公告)号：US20190227321A1

公开(公告)日：2019-07-25

申请号：US16209719

申请日：2018-12-04

申请人： Facebook Technologies, LLC

发明人： Hee Yoon Lee ,  Ningfeng Huang ,  Eric Fest ,  Pasi Saarikko ,  Erik Shipton ,  Giuseppe Calafiore

IPC分类号： G02B27/01 ,  F21V8/00 ,  G02B5/18

CPC分类号： G02B27/0172 ,  G02B5/18 ,  G02B5/1809 ,  G02B5/22 ,  G02B6/005 ,  G02B27/0101 ,  G02B2005/1804 ,  G02B2027/012 ,  G02B2027/0178

摘要： A waveguide display includes a first substrate and one or more grating layers on a first surface of the first substrate. The one or more grating layers are configured to cause destructive interference between ambient light diffracted by at least two grating layers or between ambient light diffracted by different portions of one grating layer. In some embodiments, the waveguide display also includes an angular-selective transmissive layer. The angular-selective transmissive layer is configured to reflect, diffract, or absorb ambient light incident on the angular-selective reflective layer with an incidence angle greater than a threshold value.

公开(公告)号：US10761330B2

公开(公告)日：2020-09-01

申请号：US16209719

申请日：2018-12-04

申请人： Facebook Technologies, LLC

发明人： Hee Yoon Lee ,  Ningfeng Huang ,  Eric Fest ,  Pasi Saarikko ,  Erik Shipton ,  Giuseppe Calafiore

IPC分类号： G02B5/18 ,  G02B27/01 ,  F21V8/00 ,  G02B5/22

摘要： A waveguide display includes a first substrate and one or more grating layers on a first surface of the first substrate. The one or more grating layers are configured to cause destructive interference between ambient light diffracted by at least two grating layers or between ambient light diffracted by different portions of one grating layer. In some embodiments, the waveguide display also includes an angular-selective transmissive layer. The angular-selective transmissive layer is configured to reflect, diffract, or absorb ambient light incident on the angular-selective reflective layer with an incidence angle greater than a threshold value.